A factory function to construct an object of type ZonesConnection that uses REST over HTTP as transport in lieu of gRPC.
REST transport should only be used for services that do not support gRPC or if the existing network configuration precludes using gRPC.
The returned connection object should not be used directly; instead it should be passed as an argument to the constructor of ZonesClient.
The optional options argument may be used to configure aspects of the returned ZonesConnection. Expected options are any of the types in the following option lists:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eThis document provides reference information for the Google Cloud C++ client library's \u003ccode\u003ecompute_zones_v1\u003c/code\u003e namespace, with the most recent release candidate version being 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe content covers various versions of the library, ranging from version 2.15.1 up to 2.37.0-rc, including version 2.21.0.\u003c/p\u003e\n"],["\u003cp\u003eIt details key classes like \u003ccode\u003eZonesClient\u003c/code\u003e and \u003ccode\u003eZonesConnection\u003c/code\u003e, which are used for interacting with the zones service, as well as retry and idempotency policies.\u003c/p\u003e\n"],["\u003cp\u003eThe document outlines structs for configuring options like retry policies, backoff policies, and connection idempotency, and also describes a function \u003ccode\u003eMakeZonesConnectionRest\u003c/code\u003e for creating a REST-based \u003ccode\u003eZonesConnection\u003c/code\u003e object.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eZonesPolicyOptionList\u003c/code\u003e type alias is introduced, which encapsulates the relevant option types applicable to zones.\u003c/p\u003e\n"]]],[],null,["# Namespace google::cloud::compute_zones_v1 (2.21.0)\n\nVersion 2.21.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/compute/latest/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.41.0](/cpp/docs/reference/compute/2.41.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.40.0](/cpp/docs/reference/compute/2.40.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.39.0](/cpp/docs/reference/compute/2.39.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.38.0](/cpp/docs/reference/compute/2.38.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.37.0](/cpp/docs/reference/compute/2.37.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.36.0](/cpp/docs/reference/compute/2.36.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.35.0](/cpp/docs/reference/compute/2.35.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.34.0](/cpp/docs/reference/compute/2.34.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.33.0](/cpp/docs/reference/compute/2.33.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.32.0](/cpp/docs/reference/compute/2.32.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.31.0](/cpp/docs/reference/compute/2.31.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.30.0](/cpp/docs/reference/compute/2.30.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.29.0](/cpp/docs/reference/compute/2.29.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.28.0](/cpp/docs/reference/compute/2.28.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.27.0](/cpp/docs/reference/compute/2.27.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.26.0](/cpp/docs/reference/compute/2.26.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.25.1](/cpp/docs/reference/compute/2.25.1/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.24.0](/cpp/docs/reference/compute/2.24.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.23.0](/cpp/docs/reference/compute/2.23.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.22.1](/cpp/docs/reference/compute/2.22.1/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.21.0](/cpp/docs/reference/compute/2.21.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.20.0](/cpp/docs/reference/compute/2.20.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.19.0](/cpp/docs/reference/compute/2.19.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.18.0](/cpp/docs/reference/compute/2.18.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.17.0](/cpp/docs/reference/compute/2.17.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.16.0](/cpp/docs/reference/compute/2.16.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n- [2.15.1](/cpp/docs/reference/compute/2.15.1/namespacegoogle_1_1cloud_1_1compute__zones__v1) \n\nClasses\n-------\n\n### [ZonesClient](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesClient)\n\nService for the zones resource.\n\n### [ZonesConnection](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection)\n\nThe [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection) object for [`ZonesClient`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesClient).\n\n### [ZonesConnectionIdempotencyPolicy](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnectionIdempotencyPolicy)\n\n### [ZonesLimitedErrorCountRetryPolicy](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesLimitedErrorCountRetryPolicy)\n\nA retry policy for [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection) based on counting errors.\n\n### [ZonesLimitedTimeRetryPolicy](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesLimitedTimeRetryPolicy)\n\nA retry policy for [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection) based on elapsed time.\n\n### [ZonesRetryPolicy](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesRetryPolicy)\n\nThe retry policy for [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection).\n\nStructs\n-------\n\n### [ZonesBackoffPolicyOption](/cpp/docs/reference/compute/2.21.0/structgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesBackoffPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the backoff policy.\n\n### [ZonesConnectionIdempotencyPolicyOption](/cpp/docs/reference/compute/2.21.0/structgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnectionIdempotencyPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure which operations are retried.\n\n### [ZonesRetryPolicyOption](/cpp/docs/reference/compute/2.21.0/structgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesRetryPolicyOption)\n\nUse with [`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html) to configure the retry policy.\n\nFunctions\n---------\n\n### MakeDefaultZonesConnectionIdempotencyPolicy()\n\n### MakeZonesConnectionRest(Options)\n\nA factory function to construct an object of type [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection) that uses REST over HTTP as transport in lieu of gRPC. \nREST transport should only be used for services that do not support gRPC or if the existing network configuration precludes using gRPC.\n\nThe returned connection object should not be used directly; instead it should be passed as an argument to the constructor of [ZonesClient](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesClient).\n\nThe optional `options` argument may be used to configure aspects of the returned [`ZonesConnection`](/cpp/docs/reference/compute/2.21.0/classgoogle_1_1cloud_1_1compute__zones__v1_1_1ZonesConnection). Expected options are any of the types in the following option lists:\n\n- [`google::cloud::CommonOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::RestOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::UnifiedCredentialsOptionList`](https://cloud.google.com/cpp/docs/reference/common/latest/namespacegoogle_1_1cloud.html)\n- [`google::cloud::compute_zones_v1::ZonesPolicyOptionList`](/cpp/docs/reference/compute/2.21.0/namespacegoogle_1_1cloud_1_1compute__zones__v1)\n\n| **Note:** Unexpected options will be ignored. To log unexpected options instead, set `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` in the environment.\n\nType Aliases\n------------\n\n### ZonesPolicyOptionList\n\n**Alias Of** : `OptionList\u003c ZonesRetryPolicyOption, ZonesBackoffPolicyOption, ZonesConnectionIdempotencyPolicyOption \u003e` \nThe options applicable to Zones."]]
